Bug - Can't add new card layout group if top display grouping is a List sourced from a table

I had sent this bug previously to Thomas from support, but am entering it here as well just to make sure it is visible and tracked by all.

Coda doc bug report:

Any ETA on this? Surprised it’s not a problem for more people - this makes sourcing a “Status” from a list a no-go if you want to use it for card layout.